cve.bz

CVE-2020-27178

7.5 highEPSS 1.2%

High (7.5) in apereo central authentication service. EPSS 1.2% chance of exploitation in the next 30 days. Fixed in org.apereo.cas:cas-server-webapp 5.3.16, 6.1.7.2, 6.2.4.

Apereo CAS 5.3.x before 5.3.16, 6.x before 6.1.7.2, 6.2.x before 6.2.4, and 6.3.x before 6.3.0-RC4 mishandles secret keys with Google Authenticator for multifactor authentication.

Severity

CVSS 3.1

7.5 high
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS
1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-31)
Published
Modified
Record from
the NVD, synced

Affected

Packages (OSV)

AdvisoryEcosystemPackageAffectedFixed in
GHSA-q39c-5vh5-vw2pMavenorg.apereo.cas:cas-server-webapp>=5.3.0 <5.3.165.3.16
GHSA-q39c-5vh5-vw2pMavenorg.apereo.cas:cas-server-webapp>=6.0.0 <6.1.7.26.1.7.2
GHSA-q39c-5vh5-vw2pMavenorg.apereo.cas:cas-server-webapp>=6.2.0 <6.2.46.2.4
GHSA-q39c-5vh5-vw2pMavenorg.apereo.cas:cas-server-support-otp-mfa-core>=5.3.0 <5.3.165.3.16
GHSA-q39c-5vh5-vw2pMavenorg.apereo.cas:cas-server-support-otp-mfa-core>=6.0.0 <6.1.7.26.1.7.2
GHSA-q39c-5vh5-vw2pMavenorg.apereo.cas:cas-server-support-otp-mfa-core>=6.2.0 <6.2.46.2.4

References

Check your stackJSON